Robot's Revenge

by Franklin W. Dixon

Book Overview

While attending the Teen Inventors Club competition in Chicago, Frank and Joe Hardy discover that someone is trying to sabotage Roger the Lobber, an automatic tennis ball retrieval and return unit. This description may be from another edition of this product.

• Format: Paperback
• Language: English
• ISBN: 0671793136
• ISBN13: 9780671793135
• Release Date: December 1993
• Publisher: Aladdin Paperbacks
• Length: 10 Pages
• Weight: 0.27 lbs.
• Dimensions: 0.4" x 5.1" x 7.5"
• Age Range: 9 to 12 years
• Grade Range: Grades 4 to 7